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Setting instruction
1. Folie 1
GAS ENGINES PHASE 3SETTING INSTRUCTION
Augsburg, November 2009
Your instructor
for gas engines:
Markus Krones
Klaus Liebl
2. Folie 2
PHASE 3SETTING INSTRUCTIONS
FUNCTIONAL OVERVIEW
gas
Pel
Pel
M act.
M desired
HUcorrection
VBsoll_corr.
-36S4
-36S5
Drehmom.begrenzung
efficiency
Msoll
Wirkungsgrad
Gemisch-
VBsoll_corr. quantität
position
A
Drehzahlregler
mixture
quantity
ProAct
n
torquelimitation
ProAct B
position
speedgovernor
T 5(B)
-36S6
-10S2
-10S1
n actual
n actual
Seite 2 / MTU Onsite Energy für Musterkunde / 25.04.2024
n actual
n actual
n actual
air-gas-mixture
Luft-Gas-Gemisch
gas-air-mixer
P 5B
P 5A
Venturi-Mischer
Gemischqualität
-21PC1
-36S3
desired volume flow
benötigte Gasmenge
mixture
quality
+ASS
-36S2
TecJet 50+
MMC; Genset Control
MMC; Aggregatesteuerung
n des.
M actual
exhaust
act.
actual
-36S1
air/Luft
3. Folie 3
PHASE 3SETTING INSTRUCTIONS
RATED POWER
Step:
PR No.:
PR type:
1
1.1005.020
1D
PR name:
Seite 3 / MTU Onsite Energy für Musterkunde / 25.04.2024
Rated Power
Description
Maximum power must be set to the same level in the ECU and in the
genset control (MMC and MSP).
4. Folie 4
PHASE 3SETTING INSTRUCTIONS
HU CORRECTION ENABLE
Step:
2
PR No.:
1.1430.001
PR type:
PR name:
Description
1D
Enable HU
correction
The Hu-correction control balances out changes in gas quality.
Balancing is effected by comparing the actual moment with the
ECU target moment utilizing the generator's characteristic map and
CAN Electrical Power. Either more or less fuel is added when
fluctuations occur. For data plotting in standard series acceptance
procedures, this function must be deactivated as it also "balances
out" individual engine differences and thus alters emission
settings if the engine has not yet undergone End-of-Line
calibration. To switch off the Hu-correction function, set the PC-/
Active value to 0.
Seite 4 / MTU Onsite Energy für Musterkunde / 25.04.2024
5. Folie 5
PHASE 3SETTING INSTRUCTIONS
FUEL GAS DATA SETTING
Step:
3
PR No.:
1.1210.001
PR type:
1D
PR name:
Description
Lmin working
The following conditions apply to the test bench run (MDE) in
Augsburg: Examination whether and Lmin test stand gas
have the same values (9,622) like Lmin operating gas. Relative
density operating gas A (in purchase to the normous density
of air) must 0.569 kg/m³ and HU value gas must 10.037 kWh/m³
amount to. These values should deviate shifts in the
regulation would arise. Commissioning with other gas than in
Augsburg (thus locally at the customer) the values of the
current gas analysis must be registered locally in the
parameters for the " operating gas " and the HU value gas.
Incorrect attitude of the fuel quality leads to an inadvertent
adjustment of the Hu-correctuion Lmin is the air requirement
for the complete burn of the gas with stoichiometric mixture
(Lambda=1).
fuel A
1.1210.002
Specific gravity
working gas A
1.1210.003
Lmin test bed fuel
1.1210.103
Hu-value
Seite 5 / MTU Onsite Energy für Musterkunde / 25.04.2024
6. Folie 6
Phase 3SETTING INSTRUCTION
(TEST BED) FUEL PWM ALLOCATION
Step:
4
PR No.:
1.1400.009
PR type:
PR name:
2D
Fuel PWM
allocation
Description
The Tecjet gas metering valve must be individually
adjusted when the engine is at standstill.
Until such time as the Tecjets are supplied with the final
data records installed, the monitoring tool (RS232)
must be used to set the correct volumetric fuel flow in
the Tecjet at "Flow". 205.56 Nl/s (x 3.6 = 740 Nm³/h) at
95% PWM. The Y-values in the ECU must then be
adjusted (with the engine at standstill until the
corresponding value is displayed in the TecJet at "Flow
Demand". (0 and 205.56 Nl/s) tolerance: +/- 0.05 Nl/s.
The values must be adjusted in the ECU at Cell Y1; first,
the 95%-point (740Nm3/h) which must be transferred to Y2, and
subsequently the 0%-point (0Nm3/h) (because the ECU's PWMoutput at standstill corresponds to only 5% approx.)
X1=0 and X2=740 must appear as the X-values in the
ECU-characteristic map.
This applies unioformaly for all cylinder configurations.
This procedure must be repeated each time the TecJet
or the ECU is exchanged.
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7. Folie 7
Phase 3SETTING INSTRUCTION
(TEST BED) FUEL PWM ALLOCATION
205,5600
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8. Folie 8
Phase 3SETTING INSTRUCTION
(TEST BED) COMPRESSOR BYPASS
Step:
5
PR No.:
1.1410.013
PR type:
PR name:
Description
Compressor
bypass angle to
PWM signal
The restrictor flap (DK) of the FlowTech compressor
2D
bypass must be adjusted individually while the engine
is at a standstill. To do this, enter the value at which the
restrictor flap is fully open at Reference Point 1 in Box
Y[%]. Two people are required for this operation; one to
alter the value (starting from approx. 30% and
determining the upper value. The upper limit value must
always be approached from the mid-position) and the
other to determine the limit position on the engine. The
value determined must be entered at Reference Point 2
in Box Y[%].
The value for 'fully closed' is always 0. This value is retained at
Reference Point 1 in Box Y[%].
X-values must not be altered!
This procedure must be repeated each time the
FlowTech or the ECU is exchanged.
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9. Folie 9
Phase 3SETTING INSTRUCTION
(TEST BED) COMPRESSOR BYPASS
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10. Folie 10
Phase 3SETTING INSTRUCTION
(TEST BED) THROTTLE ANGLE TO PWM
Step:
6
PR No.:
1.1450.014
PR type:
1D
1.1450.024
1D
1.1450.015
2D
1.1450.025
PR name:
Description
Min throttle sur-face
controller A
The following preparatory steps are required prior to
Min throttle sur-face
controller B
- Adjust minimum controller restrictor flap area A
Max. throttle surface controller A
- Adjust maximum controller restrictor flap area A
Max. throttle surface controller B
2D
setting the mixture restrictor flap:
and B to 0%
and B to 100%
- Activate restrictor flap test (PC-/Active-value=1).
Important! On completion of restrictor flap adjustment,
the values must be re-set to the original values without
1.1450.026
1D
Enable open/ close
throttle test
Seite 10 / MTU Onsite Energy für Musterkunde / 25.04.2024
fail!
11. Folie 11
Phase 3SETTING INSTRUCTION
(TEST BED) THROTTLE ANGLE TO PWM
1
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1
1
12. Folie 12
Phase 3SETTING INSTRUCTION
(TEST BED) THROTTLE ANGLE TO PWM
Step:
7
PR No.:
1.1450.008
PR type:
PR name:
2D
Description
The ProAct`s in the receiver pipe must be individually
adjusted when the engine is at a standstill.
There is only one characteristic map for flap A and B.
Accordingly, the value for 'fully closed' status and
'fully open' status must be set for the flap which
reaches this status first.
To do this, enter the value at which the restrictor flap is
fully open at Reference Point 1 in Box Y[%]. Two people
are required for this operation; one to alter the value
and the other to determine the limit position on the
engine. The value determined must be entered at
Reference Point 2 in Box Y[%].
Subsequently, determine the value for 'fully closed' in
the same way. This value is retained at Reference Point
1 in Box Y[%].
…
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13. Folie 13
Phase 3SETTING INSTRUCTION
(TEST BED) THROTTLE ANGLE TO PWM
Step:
7
PR No.:
1.1450.008
PR type:
PR name:
2D
Description
… It is important to determine this point so that the flap does not
close with any audible noise otherwise it is possible that the flap
could stick. During this
procedure, check the DK indicator to determine
whether the DK is still actually moving as there is a
danger that it could become lodged if the PWM-signal
is inadequate.
X-values must not be altered!
This procedure must be repeated each time a restrictor
flap or the ECU is exchanged.
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14. Folie 14
Phase 3SETTING INSTRUCTION
(TEST BED) THROTTLE ANGLE TO PWM
Step:
8
PR No.:
1.1450.014
PR type:
1D
PR name:
Description
Min throttle sur-face
controller A
Important! On completion of restrictor flap adjustments
the values must be re-set to the original values without
fail!
Min throttle sur-face
controller B
1.1450.024
1D
1.1450.015
2D
Max. throttle surface controller A
1.1450.025
2D
Max. throttle surface controller B
1.1450.026
1D
Enable open/ close
throttle test
Seite 14 / MTU Onsite Energy für Musterkunde / 25.04.2024
De-activate Open/Close flap test (set PC-/Active-value
to 0)!
15. Folie 15
Phase 3SETTING INSTRUCTION
THROTTLE ANGLE TO PWM
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16. Folie 16
Phase 3SETTING INSTRUCTION
(TEST BED) EOL QUANTITY CORRECTION
Step:
PR No.:
PR type:
PR name:
Description
9
1.1200.022
2D
End-of-Line
Quantitycorrection
End-of-Line (EOL) quantity correction is for correction
of the internal friction in individual engines. The values
to be entered are factors >1, signifying an increase in
mixture quantity (quantity control), and <1 signifying a
reduction in mixture quantity.
Data filling must be carried out during steady-state
operation at the relevant operating point (target
moment PV 2.1000.049
). Plotting of the Y-values
takes place at the relevant operating point for the Xreference points. At least the first five reference points
must be filled.
The remaining 5 reference points serve as reserves.
The first column is set during idling with GCB closed
and MCB open (as this torque value corresponds to the
drive torque of the generator fan).
The value determined at Y5 is transferred to reference
points Y6 to Y10. The current volumetric fuel flow is
multiplied by the factor entered. This does not alter the
mixture quality as the volumetric air flow is also
adjusted via calculation P5actual.
…
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17. Folie 17
Phase 3SETTING INSTRUCTION
(TEST BED) EOL QUANTITY CORRECTION
Step:
PR No.:
PR type:
PR name:
Description
9
1.1200.022
2D
End-of-Line
Quantitycorrection
… The setting is dependent on the Hu-correction coefficient which (as a result of data plotting) must be
1.000 ±0.002.
For further information, see appendix "Examples for
setting EOL corrections".
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18. Folie 18
Phase 3SETTING INSTRUCTION
(TEST BED) EOL QUALITY CORRECTION
Step:
PR No.:
PR type:
PR name:
Description
10
1.1200.023
2D
End-of-Line
Qualitycorrection
End-of-Line (EOL) quality correction is for emissions
adjustment. This characteristic map is for balancing
the Tecjet fuel metering valve tolerances and sensorics
for individual engines. The values to be entered are
factors >1, signifying an increase in fuel quantity and
<1, signifying a reduction in fuel quantity.
The X-values are referred to the target moment PV
2.1000.049.
Data filling must take place during steady-state
operation. Plotting of the Y-values takes place at the
relevant operating point for the X-reference points. At
least the first five reference points must be plotted. The
remaining 5 reference points serve as reserves. The
first column is set during idling with GCB closed and
MCB open (as this torque value corresponds to the
drive torque of the generator fan). The value determined
at Y5 is transferred to reference points Y6 to Y10.
…
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19. Folie 19
Phase 3SETTING INSTRUCTION
(TEST BED) EOL QUALITY CORRECTION
Step:
PR No.:
PR type:
PR name:
Description
10
1.1200.023
2D
End-of-Line
Qualitycorrection
… The current volumetric fuel flow is multiplied by
the factor entered. Only the volumetric fuel flow is
altered - no increase in air quantity takes place (quality
control only). The target is to set emissions in
compliance with the clean-air regulation (TA-air, 1/2 TAair or netherland).
Important! Care must be taken to ensure that the
controller is loaded with the correct data record (TAair, 1/2 TA-air or netherland).
Seite 19 / MTU Onsite Energy für Musterkunde / 25.04.2024
20. Folie 20
Phase 3SETTING INSTRUCTION
(TEST BED) HU CORRECTION COEFFICIENT
Step:
PR No.:
PR type:
PR name:
Description
11
1.1430.009
--
Hu correctioncoefficient
Setting emissions via the EOL quality correction
function alters the real lambda and, therefore,
efficiency. This can result in a shift of target moment in
relation to the measured moment and thus to a change
in the Hu-correction co-efficient. Steps 9 and 10 must
Be repeated until emissions are correctly adjusted
emission tolerance: NOx - 10mg/Nm³
and the
Hu-correction coefficient is 1.000 ±0.002.
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21. Folie 21
Phase 3SETTING INSTRUCTION
(TEST BED) ENABLE HU CORRECTION
Step:
PR No.:
PR type:
12
1.1430.001
1D
PR name:
Enable HU
correction
Description
The Hu-correction facility must be re-activated following
completion of adjustments by setting PC- and Active value to 1.
Subsequently, emissions must be checked in the range above 50%
power at several operating points and in steady-state. For this
process, points at which the engine has not yet been calibrated,
should be specifically targeted. If deviations greater than 20
mg/Nm³ below the permissible limit value occur, additonal
reference points must be integrated in the EOL quality and quantity
correction process and plotted. The Hu-correction facility must be
switched off again for this purpose. Then continue with item 8 (adjustments during test bed run).
Following exchange of the MAP sensor or the TecJet or generator
measuring transducer, and after an engine overhaul, the EOL
correction settings must be checked and re-set as appropriate!
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22. Folie 22
Phase 3SETTING INSTRUCTION
(COMMISIONING) DIASYS SETTINGS
What is necessary for commissioning?
1. Engine must have operation temperature
2. Structural conditions for start-up given (mechanical and electrical work is complete
Load drive up to 100 % Load is possible).
3. Exhaust measuring instrument (calibrated) and correctly placed measuring point
(3 x D after bellow).
4. DIASYS (version 2.50, USB-to-CAN II, Dongle 1b, Notebook)
5. actual gas analysis
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23. Folie 23
Phase 3SETTING INSTRUCTION
(COMMISIONING) PRE CHECK
Step:
1
PR No.:
1.1005.020
PR type:
PR name:
1D
Seite 23 / MTU Onsite Energy für Musterkunde / 25.04.2024
Rated Power
Description
Maximum power must be set at the same level in the ECU and in
the plant (MMC and MSP).
24. Folie 24
Phase 3SETTING INSTRUCTION
(COMMISIONING) OPERATING GAS SETTINGS
Step:
PR No.:
PR type:
PR name:
Description
2
1.1210.001
1D
Lmin working
fuel A
Enter the air requirement Lmin depending on the quality of the gas
used. This value should be taken from an up-to-date gas quality
analysis.
3
1.1210.002
1D
Specif. gravity
working fuel A
The relative density to be entered is calculated by
dividing standard density for the quality of gas in use
(taken from gas quality analysis) by the standard
density of air (1.290 kg/m³).
Example:
density of gas = 0,734 kg/m3
---------------------------------------- = 0,569 kg/m3
4
1.1210.103
1D
Seite 24 / MTU Onsite Energy für Musterkunde / 25.04.2024
HU value gas
density of air = 1,290 kg/m3
The Hu value of the gas must be taken from the quality
analysis for the gas in use on site.
25. Folie 25
Phase 3SETTING INSTRUCTION
(FIELD) ENABLE HU CORRECTION
Step:
PR No.:
PR type:
5
1.1430.001
1D
PR name:
Enable HU
correction
Description
Please check that the Hu-correction is activated (ad-justments by
setting PC- and Active value to 1).
Subsequently, emissions must be checked in the range above 50%
power at several operating points and in steady-state. For this
process, points at which the engine has not yet been calibrated,
should be specifically targeted. If deviations greater than 20
mg/Nm³ below the permissible limit value occur, additonal
reference points must be integrated in the EOL quality and quantity
correction process and plotted. The Hu-correction facility must be
switched off again for this purpose. Then continue with item 8.
Following exchange of the MAP sensor or the TecJet or generator
measuring transducer, and after an engine overhaul, the EOL
correction settings must be checked and re-set as appropriate!
Seite 25 / MTU Onsite Energy für Musterkunde / 25.04.2024
26. Folie 26
Phase 3SETTING INSTRUCTION
(FIELD) EXAMPLES FOR EOL CORRECTIONS
Actual status:
Corrective action:
Hu-correction coefficient = 1
1. increasing EOL quality correction value
and
NOx emissions too low.
at Y until NOx emissions are ok.
2. If the Hu-correction coefficient is not
1 ±0.002, make adjustments via EOL
quantity correction until Hu-correction
coefficient = 1 ±0.002
(Hu-correction coefficient > 1
increasing value at Y;
Hu-correction coefficient < 1 decreasing value at Y).
3. Repeat steps 1 and 2 until Hu-correction
coefficient = 1 ±0.002 and emissions are
ok.
Seite 26 / MTU Onsite Energy für Musterkunde / 25.04.2024
27. Folie 27
Phase 3SETTING INSTRUCTION
(FIELD) EXAMPLES FOR EOL CORRECTIONS
Actual status:
Corrective action:
Hu-correction coefficient > 1
1. Increase EOL quantity correction value
and
NOx emissions ok.
at Y until Hu-correction coefficient = 1
±0.002.
2. Check emissions and, if necesssary,
adjust via EOL quality correction
(emissions too low increase value at Y;
emissions too high decrease value at Y).
3. Repeat steps 1 and 2 until Hu-correction
coefficient = 1 ±0.002 and emissions are
ok.
Seite 27 / MTU Onsite Energy für Musterkunde / 25.04.2024
28. Folie 28
Phase 3SETTING INSTRUCTION
(FIELD) EXAMPLES FOR EOL CORRECTIONS
Actual status:
Corrective action:
Hu-correction coefficient > 1
1. Increase EOL quality correction value
at
and
NOx emissions too low
Y until NOx emissions are ok.
2. Adjust Hu-correction coefficient via
EOL
quantity correction until Hu-correction
coefficient = 1 ±0.002
(Hu-correction coefficient > 1
increase
value at Y;
Hu-correction coefficient < 1
decrease
value at Y).
3. Repeat steps 1 and 2 until Hucorrection
coefficient = 1 ±0.002 and emissions
are
ok.
Seite 28 / MTU Onsite Energy für Musterkunde / 25.04.2024
29. Folie 29
Phase 3SETTING INSTRUCTION
(FIELD) EXAMPLES FOR EOL CORRECTIONS
Actual status:
Corrective action:
Hu-correction coefficient > 1
1. Decrease EOL quantity correction value
and
NOx emissions too high
at Y until Hu-correction coefficient = 1
±0.002.
2. Check emissions and if necessary
adjust
via EOL quality correction
(emissions too low increase value at Y
emissions too high decrease value at
Y)
3. Repeat steps 1 and 2 until Hucorrection
coefficient = 1 ±0.002 and emissions
are
ok.
Seite 29 / MTU Onsite Energy für Musterkunde / 25.04.2024
30. Folie 30
Phase 3SETTING INSTRUCTION
(FIELD) EXAMPLES FOR EOL CORRECTIONS
Actual status:
Corrective action:
Hu-correction coefficient < 1
1. Decrease EOL quantity correction value
at Y until Hu-correction coefficient = 1
and
±0.002.
NOx emissions ok
2. Check emissions and if necessary
adjust
via EOL quality correction
emissions too low increase value at
Y
emissions too high decrease value at
Y
3. Repeat steps 1and 2 until Hu-correction
coefficient = 1 ±0.002 and emissions
are
ok.
Seite 30 / MTU Onsite Energy für Musterkunde / 25.04.2024
31. Folie 31
Phase 3SETTING INSTRUCTION
(FIELD) EXAMPLES FOR EOL CORRECTIONS
Hu-correction coefficient < 1 and NOx emissions ok
NOx: 160 ppm (ok)
Hu corr.coeff: 0,996 (too low)
NOx: 160 ppm (ok)
Hu corr.coeff: 1,001 (ok)
Seite 31 / MTU Onsite Energy für Musterkunde / 25.04.2024
32. Folie 32
Phase 3SETTING INSTRUCTION
(FIELD) EXAMPLES FOR EOL CORRECTIONS
Actual status:
Corrective action:
Hu-correction coefficient < 1
1. Decrease EOL quantity correction value
at Y until Hu-correction coefficient = 1
and
±0.002.
NOx emissions too low
2. Check emissions and if necessary
adjust
via EOL quality correction
emissions too low increase value at
Y
emissions too high decrease value at
Y
3. Repeat steps 1 and 2 until Hucorrection
factor = 1 ±0.002 and emissions are ok.
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33. Folie 33
Phase 3SETTING INSTRUCTION
(FIELD) EXAMPLES FOR EOL CORRECTIONS
Actual status:
Corrective action:
Hu-correction coefficient < 1
1. Decrease EOL quality correction value at
and
NOx emissions too high
Y until NOx emissions are ok.
2. If Hu-correction coefficient is not
1 ±0.002, adjust via EOL quantity
correction until Hu-correction coefficient
= 1 ±0.002
Hu-correction coefficient > 1 increase
value at Y
Hu-correction coefficient < 1 decrease
value at Y
3. Repeat steps 1 and 2 until Hu-correction
coefficient = 1 ±0.002 and emissions are
ok.
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34. Folie 34
Phase 3SETTING INSTRUCTION
(FIELD) TECJET PROACT FLOWTEC
Tasks during start-up or after exchange of components (TecJet, ProAct or Flowtec):
1. Adjustment Tecjet
2. Adjustment ProAct
(3. Adjustment FlowTec)
Seite 34 / MTU Onsite Energy für Musterkunde / 25.04.2024
35. Folie 35
Phase 3SETTING INSTRUCTION
(FIELD) FUEL PWM ALLOCATION TECJET
1.) Fuel-PWM-Allocation for TecJet (throttle):
Step:
1
PR No.:
1.1400.009
PR type:
PR name:
Description
2D
Fuel PWM
allocation
The Tecjet gas metering valve must be individually adjusted when the engine is
at standstill.
Until such time as the Tecjets are supplied with the final data records installed,
the monitoring tool (RS232) must be used to set the correct volumetric fuel flow
in the Tecjet at "Flow". 205.56 Nl/s (x 3.6 = 740 Nm³/h) at 95% PWM. The Yvalues in the ECU must then be adjusted (with the engine at standstill until the
corresponding value is displayed in the TecJet at "Flow Demand". (0 and
205.56 Nl/s) tolerance: +/- 0.05 Nl/s.
The values must be adjusted in the ECU at Cell Y1; first, the 95%-point
(740Nm3/h) which must be transferred to Y2, and sub-sequently the 0%-point
(0Nm3/h) (because the ECU's PWM-output at standstill corresponds to only 5%
approx.)
X1=0 and X2=740 must appear as the X-values in the ECU-characteristic map.
This applies unioformaly for all cylinder configurations.
This procedure must be repeated each time the TecJet
or the ECU is exchanged.
205,5600
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36. Folie 36
Phase 3SETTING INSTRUCTION
(FIELD) FUEL PWM ALLOCATION PROACT
2.) Quantity - PWM-Allocation for ProAct (throttle):
Step:
1
PR No.:
1.1450.014
PR type:
1D
1.1450.024
1D
1.1450.015
2D
1.1450.025
2D
1.1450.026
1D
PR name:
Description
Min throttle sur-face
controller A
The following preparatory steps are required prior to
Min throttle sur-face
controller B
- Adjust minimum controller restrictor flap area A
Max. throttle surface controller A
- Adjust maximum controller restrictor flap area A
Max. throttle surface controller B
Enable open/ close
throttle test
setting the mixture restrictor flap:
and B to 0%
and B to 100%
-
Activate restrictor flap test (PC-/Active-value=1).
Important! On completion of restrictor flap adjustment,
the values must be re-set to the original values without
fail!
Seite 36 / MTU Onsite Energy für Musterkunde / 25.04.2024
37. Folie 37
Phase 3SETTING INSTRUCTION
(FIELD) FUEL PWM ALLOCATION PROACT
2.) Quantity - PWM-Allocation for ProAct (throttle):
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38. Folie 38
Phase 3SETTING INSTRUCTION
(FIELD) FUEL PWM ALLOCATION PROACT
2.) Quantity - PWM-Allocation for ProAct (throttle):
Step:
2
PR No.:
1.1450.008
PR type:
PR
name:
2D
Description
The ProAct`s in the receiver pipe must be individually adjusted when the engine
is at a standstill.
There is only one characteristic map for flap A and B. Accordingly, the value for
'fully closed' status and 'fully open' status must be set for the flap which reaches
this status first.
To do this, enter the value at which the restrictor flap is fully open at Reference
Point 1 in Box Y[%]. Two people are required for this operation; one to alter the
value and the other to determine the limit position on the engine. The value
determined must be entered at
Reference Point 2 in Box Y[%].
Subsequently, determine the value for 'fully closed' in the same way. This value is
retained at Reference Point 1 in Box Y[%].
It is important to determine this point so that the flap does not close with any
audible noise otherwise it is possible that the flap could stick. During this
procedure, check the DK indicator to determine whether the DK is still actually
moving as there is a
danger that it could become lodged if the PWM-signal
is inadequate. DISABLE FLAPTEST PR 1.1450.026
X-values must not be altered! This procedure must be repeated each time a
restrictor flap or the ECU is exchanged.
Seite 38 / MTU Onsite Energy für Musterkunde / 25.04.2024
39. Folie 39
Phase 3SETTING INSTRUCTION
(FIELD) EOL CORRECTIONS
End-of-Line-Corrections (fuel quantity and fuel fuel quality)
1. Comparisons of the rated power parameter (ECU-7 MMC MSP).
2. local gas quality adaption
3. deactivation Hu-correction
4. EOL quality regulation
5. EOL quantity regulation
6. Activation Hu-correction
7. examination of the Hu-correction
Seite 39 / MTU Onsite Energy für Musterkunde / 25.04.2024
40. Folie 40
Phase 3SETTING INSTRUCTION
(FIELD) EOL CORRECTIONS
1.) Comparisons of the rated power parameter :
Step:
PR No.:
PR type:
1
1.1005.020
1D
PR name:
Seite 40 / MTU Onsite Energy für Musterkunde / 25.04.2024
Rated Power
Description
Maximum power must be set at the same level in the ECU and in the
plant (MMC and MSP).
41. Folie 41
Phase 3SETTING INSTRUCTION
(FIELD) EOL CORRECTIONS
2.) Set specific gravity and Lmin for operating gas:
Step:
PR No.:
PR type:
PR name:
Description
1
1.1210.001
1D
Lmin working
fuel A
Enter the air requirement Lmin depending on the quality of the
gas used. This value should be taken from an up-to-date gas
quality analysis.
2
1.1210.002
1D
Specif. gravity
working fuel A
The relative density to be entered is calculated by
dividing standard density for the quality of gas in use
(taken from gas quality analysis) by the standard
density of air (1.290 kg/m³).
Example:
density of gas = 0,734 kg/m3
---------------------------------------- = 0,569 kg/m3
3
1.1210.103
1D
Seite 41 / MTU Onsite Energy für Musterkunde / 25.04.2024
HU value gas
density of air = 1,290 kg/m3
The Hu value of the gas must be taken from the quality
analysis for the gas in use on site.
42. Folie 42
Phase 3SETTING INSTRUCTION
(FIELD) EOL CORRECTIONS
3.) Deactivating HU correction:
Step:
1
PR No.:
1.1430.001
PR type:
PR name:
Description
1D
Enable HU
correction
The Hu-correction facility balances out small fluctuations in gas
quality. Balancing is effected by comparing the actual moment with
the ECU target moment utilizing the generator's characteristic map
and CAN Electrical Power. Either more or less fuel is added when
fluctuations occur. For data plotting in standard series acceptance
procedures, this function must be deactivated as it also "balances
out" individual engine differences and thus alters emission
settings if the engine has not yet undergone End-of-Line
calibration. To switch off the Hu-correction function, set the PC-/
Active value to 0.
0
Seite 42 / MTU Onsite Energy für Musterkunde / 25.04.2024
43. Folie 43
Phase 3SETTING INSTRUCTION
(FIELD) EOL CORRECTIONS
4.) End-of-Line quality regulation:
Step:
PR No.:
PR
type:
PR name:
Description
1
1.1200.023
2D
End-of-Line
Qualitycorrection
End-of-Line (EOL) quality correction is for emissions adjustment. This
characteristic map is for balancing the Tecjet fuel metering valve tolerances and
sensorics for individual engines. The values to be entered are factors >1,
signifying an increase in fuel quantity and <1, signifying a reduction in fuel
quantity.
The X-values are referred to the target moment PV 2.1000.049.
Data filling must take place during steady-state operation. Plotting of the Yvalues takes place at the relevant operating point for the X-reference points. At
least the first five reference points must be plotted. The remaining 5 reference
points serve as reserves. The
first column is set during idling with GCB closed and MCB open (as this torque
value corresponds to the drive torque of the generator fan). The value
determined at Y5 is transferred to reference points Y6 to Y10. The current
volumetric fuel flow is multiplied by the factor entered. Only the volumetric fuel
flow is altered - no increase in air quantity takes place (quality control only).
The target is to set emissions in compliance with the clean-air regulation (TAair, 1/2 TA-air or netherland).
Important! Care must be taken to ensure that the controller is loaded with the
correct data record (TA-air, 1/2 TA-air or NL).
Seite 43 / MTU Onsite Energy für Musterkunde / 25.04.2024
44. Folie 44
Phase 3SETTING INSTRUCTION
(FIELD) EOL CORRECTIONS
5.) End-of-Line quantity regulation (internal friction):
Step:
PR No.:
PR
type:
PR name:
Description
1
1.1200.022
2D
End-of-Line
Quantitycorrection
End-of-Line (EOL) quantity correction is for correction of the internal friction in
individual engines. The values to be entered are factors >1, signifying an
increase in mixture quantity (quantity control), and <1 signifying a reduction in
mixture quantity.
Data filling must be carried out during steady-state operation at the relevant
operating point (target moment PV 2.1000.049 ). Plotting of the Y-values takes
place at the relevant operating point for the X-reference points. At least the first
five reference pointsmust be filled.
The remaining 5 reference points serve as reserves. The first column is set
during idling with GCB closed and MCB open (as this torque value
corresponds to the drive torque of the generator fan). The value determined at
Y5 is transferred to reference points Y6 to Y10. The current volumetric fuel
flow is multiplied by the factor entered. This does not alter the mixture quality
as the volumetric air flow is also adjusted via calculation P5actual.
The setting is dependent on the Hu-correction co-efficient which (as a result of
data plotting) must be 1.000 ±0.002.
For further information, see appendix "Examples for setting EOL corrections".
Seite 44 / MTU Onsite Energy für Musterkunde / 25.04.2024
45. Folie 45
Phase 3SETTING INSTRUCTION
(FIELD) EOL CORRECTIONS
6.) Activating HU correction:
Step:
1
PR No.:
1.1430.001
PR type:
PR name:
Description
1D
Enable HU
correction
After finishing the EOL-correction it is necessary to restart the Hucorrection.
To activate the Hu-correction function, set the PC-/ Active value to
1.
1
Seite 45 / MTU Onsite Energy für Musterkunde / 25.04.2024
46. Folie 46
Phase 3SETTING INSTRUCTION
(FIELD) EOL CORRECTIONS
7.) examination of the Hu-correction:
Step:
PR No.:
PR type:
PR name:
Description
11
1.1430.009
--
Hu
correctioncoefficient
Setting emissions via the EOL quality correction function alters the real
lambda and, therefore, efficiency. This can result in a shift of target moment
in relation to the measured moment and thus to a change in the Hucorrection co-efficient. Steps 9 and 10 must be repeated until emissions are
not correctly adjusted.
NOx - 10mg/Nm³
emission tolerance:
and the
Hu-correction coefficient is
Seite 46 / MTU Onsite Energy für Musterkunde / 25.04.2024
1.000 ±0.002.
47. Folie 47
THANK YOUFOR YOUR ATTENTION
MARKUS KRONES
Seite 47 / MTU Onsite Energy für Musterkunde / 25.04.2024